EP0310589B1 - Elektronisches Steuergerät - Google Patents

Elektronisches Steuergerät Download PDF

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Publication number
EP0310589B1
EP0310589B1 EP19880890162 EP88890162A EP0310589B1 EP 0310589 B1 EP0310589 B1 EP 0310589B1 EP 19880890162 EP19880890162 EP 19880890162 EP 88890162 A EP88890162 A EP 88890162A EP 0310589 B1 EP0310589 B1 EP 0310589B1
Authority
EP
European Patent Office
Prior art keywords
optical
diodes
control
metal sheet
compartment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19880890162
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0310589A3 (en
EP0310589A2 (de
Inventor
Johann Wögerbauer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEC Alsthom T&D GmbH Austria
Original Assignee
Sprecher Energie Osterreich GmbH
GEC Alsthom T&D GmbH Austria
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sprecher Energie Osterreich GmbH, GEC Alsthom T&D GmbH Austria filed Critical Sprecher Energie Osterreich GmbH
Publication of EP0310589A2 publication Critical patent/EP0310589A2/de
Publication of EP0310589A3 publication Critical patent/EP0310589A3/de
Application granted granted Critical
Publication of EP0310589B1 publication Critical patent/EP0310589B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/24—Circuit arrangements for boards or switchyards
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0018—Casings with provisions to reduce aperture leakages in walls, e.g. terminals, connectors, cables

Definitions

  • the invention relates to an electronic control unit with a microprocessor system, a feed unit consisting of two galvanically separated parts, optical transmit and receive diodes and a metal housing with light guide connections and electrical connections for control and signaling lines, in particular for a device for control and monitoring of an electrical power distribution system with a plurality of control fields controlled and monitored from a switching station via optical fibers, the electrical signals for control and feedback to the control and monitoring unit in the switching station being evaluated in the switching device drive boxes of the respective switching field.
  • a control and connection device without contacts for the automated equipment of machine tools with a switchable and removable element is known.
  • This removable element e.g. B. a probe
  • the electrical energy and the electrical measurement data are transmitted between the detachable element and a base element arranged in the machine tool by inductive or optical means.
  • Infrared transmitters and infrared receiving devices are arranged in the base element and removable element, so that modulated light can be transmitted.
  • the detachable element is fed inductively via two U-shaped, wound iron cores, one of which is arranged in the base element and the other in the removable element.
  • both together form a magnetic circuit with air gaps.
  • the control and connection device has no protection against electromagnetic influences and would therefore be unsuitable for use in the vicinity of high-voltage devices.
  • a similar inductive supply has a loudspeaker known from FR-A1-2 454 251 with modulated corona discharge. So that household appliances, e.g. B. television receiver, are not disturbed by electrical lines through the speaker, there is the mains transformer and the modulation transformer the speaker made of two M-shaped, wound iron cores, which together form a magnetic circuit with air gaps. With the exception of one M-shaped, wound iron core, all parts of the loudspeaker are housed in a metal housing. The chassis of this metal housing, in the plane of which the air gaps of the iron cores are located, has suitable recesses for the legs of the iron cores. The loudspeaker can thus be supplied with electrical energy inductively and no electrical lines lead from the metal housing, in which interference could be induced by the high-frequency oscillator.
  • the base plate of the phototransistor Because of the base plate of the phototransistor connected to earth, it would have to withstand the potential difference of at least 5 kV against earth. In addition, the phototransistor would be functionally jeopardized at high interference frequencies by inductances arising in its base plate or in the conductor tracks between the phototransistor. Optocouplers of this type are also relatively complex to manufacture and therefore expensive and require light signals of higher light intensity than conventional optocouplers because losses are present due to the transmission screen.
  • the purpose of the embodiment according to the invention shown below is to create an electronic control device of the type mentioned at the outset which has an insulation resistance to earth and between the connections of at least 5 kV and is suitable for arrangement in a switching device drive box of a high-voltage switching device, protection against increased electromagnetic influences, for example 150 kV / m, and high transmission reliability of control commands being provided.
  • the metal housing is divided into two compartments by a metal sheet with recesses, the electrical connections for control and signaling lines in one compartment and the microprocessor system with optical fiber connections and optical transmitter connections connecting to the outside in the other compartment. and receiving diodes are arranged so that the signal transmission between the two compartments takes place exclusively by means of optical transmitting and receiving diodes connecting the subject contents, which are arranged on both sides of the metal sheet at a distance therefrom in alignment with the recesses, and that the galvanically separate parts of the feed unit, as is known per se, are located on both sides of the metal sheet.
  • the recesses can be covered by a grid which is electrically conductively connected to the metal sheet.
  • any voltage fields that may occur can be derived.
  • the optical transmission diodes preferably consist of infrared transmission diodes with a light opening angle of about 10 ° and the optical receiving diodes from infrared phototransistors.
  • the phototransistors have the highest quantum yield, which can be further enhanced by the selected light opening angle.
  • Analog-frequency converters ensure that not only simple switching signals can be implemented via the light path, but also digitized analog values can be transmitted.
  • each optical transmission and reception diode connecting the compartment contents is arranged at the free end of an insulating tube which is connected to the metal sheet concentrically to form a recess.
  • the insulating tubes not only avoid mutual interference from stray light, but can also serve as a carrier for the transmit and receive diodes.
  • the optical transmit and receive diodes connecting the compartment contents are arranged at a distance of at least 10 mm from the metal sheet.
  • the microprocessor system receives the required energy exclusively through the magnetic flux through the insulated ferrite cores, the control circuits exchanging and converting optical signals only by means of a light path. This means that overvoltages that endanger the sensitive logic of the microprocessor system cannot penetrate through the supply unit.
  • FIG. 1 shows the single-pole circuit diagram of a five-field high-voltage switchgear assembly with schematically illustrated optical waveguide connections
  • FIG. 2 shows the sectional illustration with a block diagram of an electronic control device for the switchgear drive boxes.
  • busbars 19, 20 can be seen, to each of which five switch panels 21 to 25, shown in dash-dot lines, are connected via two disconnectors.
  • the busbars 19, 20 can be coupled via a circuit breaker.
  • the switch panels 22, 24 are each connected to transformers 28, 29 via circuit breakers and feed the busbars 19, 20.
  • control and monitoring unit 30 in the switching station.
  • the switchgear drive boxes are connected to one another via the optical waveguide, in switch panel 21, for example, switchgear drive boxes 1, 2, 3, 4.
  • the optical waveguide 31 then leads from switchgear drive box 3 to control and monitoring unit 30 in the switching station.
  • Serial data transmission takes place between the control and monitoring unit 30 and the switchgear drive boxes of each switch panel.
  • FIG. 2 An exemplary embodiment of the electronic control device for the switching device drive boxes 1 to 17 according to FIG. 1 is shown schematically in section in FIG. 2.
  • a grounded metal housing 40 which has two light guide connections 36, 37 and electrical connections 67, 68, 69 designed as multiple plugs 38.
  • the metal housing 40 is divided into two compartments 43, 44 by an inserted metal sheet 42 with recesses 45, which consist of bores. These bores are covered by a grid 41 which is electrically conductively connected to the metal sheet 42. Both compartments 43, 44 form Faraday cages in which the electronic components are protected against external fields.
  • three signal lines 67 are connected to the electronic control unit, which establish an electrical connection with position signaling contacts, for example a high-voltage switch drive.
  • Three control lines 68 lead to release coils of switch drives and the control line 69 is connected to a power source, for example a battery with 220 V direct current, which is supplied via the supply unit 63, 64; 65, 66 not only supplies the electronic components 60, 61, but also serves for the control circuits of the switch drives.
  • the feed unit consists of two electrically isolated parts 63, 64; 65, 66, of which one part 63, 64 is mounted in compartment 43 and the other part 65, 66 in compartment 44. Both parts 63, 64; 65, 66 have a U-shaped, wound ferrite core 64; 65, which together form a magnetic circuit with an air gap.
  • the air gaps between the legs of the ferrite cores 64; 65 are in the plane of the metal sheet 42.
  • matching recesses 46 are provided in the metal sheet 42 with play.
  • the control circuits 63, 66 are available, for example, for switching regulation and voltage regulation of the supply unit.
  • the optical receive diode E3 is designed as a photodiode with an intrinsic layer (PIN), the optical transmit diode S3 as a light-emitting diode (LED) for light signals with a wavelength of preferably 820 nm.
  • optical waveguides lead to the control and monitoring unit 30 according to FIG. 1 and form a linear optical wave transmission path (bus) with any additional switching device drive boxes of a switch panel.
  • an optical fiber is preferably provided for each transmission direction.
  • the compartment 43 contains an adaptation circuit 62 which is electrically connected to the signal lines 67 and has, for example, a filter circuit to avoid interference from signal contact bruises.
  • the control circuit 61 which is likewise arranged in the compartment 43, is electrically connected to the control lines 68, 69 and is used for processing or converting digital signals from the microprocessor system 60 to initiate switching operations of the high-voltage switching devices.
  • optical transmission and reception diodes 51, 50 are respectively aligned on both sides of the metal sheet 42 at a distance of approximately 15 mm with the recesses 45.
  • the optical transmit diodes 51 consist of infrared transmit diodes with a light opening angle of approximately 10 °
  • the optical receive diodes 50 consist of infrared phototransistors.
  • Existing analog-frequency converters are used to convert simple switching signals or to transmit digitized analog values via the optical transmit and receive diodes 51, 50.
  • the optical transmitting and receiving diodes 51, 50 connecting the subject contents are each carried by an insulating tube 53, 52, which is connected to the metal sheet 42 and is arranged concentrically with a recess 45.
  • the use of the electronic control unit is not limited to high-voltage switchgear, but can also be used economically in metal-encapsulated medium-voltage switchgear, compressed gas-insulated switchgear or the electrical control of industrial processes.
  • the electronic control unit is then located in the control part of the respective switchgear cell or in the drive boxes or control parts of the compressed gas-insulated switchgear or machine.
  • tests with the electronic control device according to the invention in high-voltage switchgear have proven that the control device is insensitive to electromagnetic influences and works perfectly even with the highest overvoltages occurring in the control and signaling lines 67 to 69.
  • the insulation resistance to earth and between the connections is at least 5 kV, but can be increased as desired by increasing the distances between the optical transmit and receive diodes 51, 50 and the metal sheet 42, between the conductor tracks of the electronic circuits, air clearances and reinforcement of the insulation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
EP19880890162 1987-09-28 1988-06-23 Elektronisches Steuergerät Expired - Lifetime EP0310589B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT244987A AT388260B (de) 1987-09-28 1987-09-28 Elektronisches steuergeraet
AT2449/87 1987-09-28

Publications (3)

Publication Number Publication Date
EP0310589A2 EP0310589A2 (de) 1989-04-05
EP0310589A3 EP0310589A3 (en) 1989-06-07
EP0310589B1 true EP0310589B1 (de) 1993-05-12

Family

ID=3534554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880890162 Expired - Lifetime EP0310589B1 (de) 1987-09-28 1988-06-23 Elektronisches Steuergerät

Country Status (5)

Country Link
EP (1) EP0310589B1 (enrdf_load_stackoverflow)
AT (1) AT388260B (enrdf_load_stackoverflow)
DE (1) DE3880948D1 (enrdf_load_stackoverflow)
ES (1) ES2040383T3 (enrdf_load_stackoverflow)
GR (1) GR3008461T3 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2264086B (en) * 1992-01-31 1996-02-07 Citizen Watch Co Ltd Ink jet head and method for driving the same
ES2109150B1 (es) * 1994-02-04 1998-10-01 Ave Spa Caja de empotrar multifuncional para la instalacion de aparatos electricos.
DE19928400C2 (de) 1999-06-22 2001-06-13 Agilent Technologies Inc Berührungssichere elektrische Hochspannungsversorgung
KR102372134B1 (ko) * 2021-07-23 2022-03-08 신건일 전자파 차폐필터

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT203886B (de) * 1956-11-10 1959-06-10 Bosch Gmbh Robert Kugelgelenk zum Verbinden von Teilen von Antriebsgestängen, insbesondere für Scheibenwischer von Fahrzeugen, und Verfahren zur Herstellung des Kugelgelenks
FR2454251B1 (fr) * 1979-04-13 1987-06-12 Klein Siegfried Circuit blinde depourvu de fuites d'ondes electromagnetiques perturbatrices
DE3218627A1 (de) * 1982-05-18 1983-11-24 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrische abschirmung von optoelektronischen wandlern
FR2566572A1 (fr) * 1984-06-21 1985-12-27 Ramses Dispositif de commande et de liaison, sans contact, pour equipements automatises, notamment en machines-outils

Also Published As

Publication number Publication date
ES2040383T3 (es) 1993-10-16
DE3880948D1 (de) 1993-06-17
EP0310589A3 (en) 1989-06-07
EP0310589A2 (de) 1989-04-05
AT388260B (de) 1989-05-26
GR3008461T3 (enrdf_load_stackoverflow) 1993-10-29
ATA244987A (de) 1988-10-15

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